An Improved Nonhomogeneous Grey Model with Fractional-Order Accumulation and Its Application

Table 1

Parameters of the competitors in the two real-world cases.

Parameter	Case 1				Case 2
	0.85363				0.98361
	0.69486				0.99217
	0.62772				0.70541
	0.49884				0.99948
	0.66898				0.75600
	0.10179				0.03251
	0.02099				0.98822
	0.63933				0.96816
	0.37460				0.99913
	0.28715				0.02580
–	NGM	FHGM	FDNGM	ONGM	NGM	FHGM	FDNGM	ONGM
A	−0.06433	−0.05620	0.00113	−0.05620	−0.12639	−0.10767	0.10902	−0.10767
B	22.33115	26.88054	4.67769	26.88054	21.76010	35.34812	25.82133	35.34812
C	244.6430	237.2880	90.1820	237.2880	193.2125	160.5392	16.92224	160.5392